Achievements are your virtual trophies based on your self achievement in KooBits challenges.
Click Achievements icon on top right of Challenge page to see all your unlocked trophies.
Top Brain Trophies: 2000+ CPs earned within the quarter for you to unlock.
Superhero Trophies: Various Super Scores earned within the week for superheroes to unlock
Champion Class Trophies: 5000+ CPs earned within the month for your class to unlock